Abrading apparatus



June 6, 1950 R. H. EDELL ET AL ABRADING APPARATUS 6 Sheets-Sheet 1 Filed Nov. 26, 1948 INVENTORS 2015562: L H 0621; A=0LLHNO Q'- H942 June 6, 1950 R. H. EDELL ETAL ABRADING APPARATUS 6 Sheets-Sheet 2 Filed Nov. 26, 1948 IQQ mam June 6, 1950 R. H. EDELL ETAL ABRADING APPARATUS Filed Nov. 26, 1949 5 6 Sheets-Sheet 4 INVENTORS 2055554 A? 5225M *fPOZLfiA/O a. HELL June 6, 1950 'R. H.'EDELL ETAL 2,510,565

AIBVRADINGI APPARATUS Filed Nov. 26, 1948 e Sheets-Sheet 5 IN VEN TORS 203552;; ff 50 #ROLLHh/D 6.1129

T1 i higma instanc ew thp -vantages of the present inveiitiiin Will if -y n er ooq from. th u considered in connection with the ied'nifia n'iiing Y drawings,

Patented june 6, 19 5 omen sures mm 2,516,565 AiT-RADING APPARATUS Basset ii. ma

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polration [much-aim member 26, 1:343, Seriai it). -nse mamas; (01; 51 13?) but. w l a s r li h p r t i e f e e s ipsegneptl applied solde i' 'will be'ddme firm? bonded h ret9.-. t H- t is. the ima ya miare il t fft i fi nvcni vn qtp fide p t i 51 d acpqrately abraglingthe edgs te be S01 ed lof he. h lv .nii l aeelei the b r t requiring the services of an ope atqn th r ha t e n h M 2 1? i v f fii the apparatus in a manner requiring n6 skill -whatever, V

o ow de'sb :In thedrawings; v I W Fi'g lis a perspective View 0f ahrafli'ng apparatus embodyingthe'present invention;

."Fig; 2 155a side elevation ofgtheapiiaratns as zviewed in the direetion of the afroyZ in Fig. 1;

Fig.3 isa top m nm f he appara us; a. Fig. 4 is;a frontfi ev i l 0f efi fi i .Fig. 5w'i'san enlarged fragmentary section, taken Fig. 6 is a. fragmentary 'sectibn t a kensiibst'ah- 'i ca he i e .1-6 of F g,- 5;,

" "Fig. f1v is an-emargeq section taken siiiistafitially Fig. '8 is an enlarged iragnientary seetidn taken 'onthe'line 8-1 of Fig. 3;

Fig. 9 is asection taken on the 1if1e 9 9df Fig. -10 is a section similar to FigJQQbIit shcStv- Zing the parts in a different position-of bioratin.

Referring to the drawings, and rnqre partieullarly to-Figsi to 3'therepf, the instant'anparatiis "comprises agbase 22 on which ie suitably zmountedfasuatfz t, an upright frame 'ifi haying a 'bedq-plate 28 Which, in the present instance,

gonsists of, spaced parallel side rails 30 and conface "in turned outwardly. 'f r'dnt 6e brackets fl gnay p eadjustgd tii take iipslafdkih with the abrasive face 10 of the belt 68. Slidable on the loading platform I is a transfer device I04 which is adapted to advance or transfer a half h of a knife handle, for instance, on the platform I80 from the loading position shown in Fig. 3 to a transfer position underneath a feeding device I06 in its retracted position (Figs. 3 and 10) The feeding device I06 is adapted, as more fully described hereinafter, to move a handle half h from its transfer position across the continuously traveling abrasive belt 68 and over and beyond a plate I08 which is suitably secured at H6 to the platform 16 (Figs. 1 to 3).

The transfer device I04 comprises a slide H2, to the opposite ends of which are secured, as by screws H4, gibs H6, respectively, which form, together with the slide H2, a guideway H8 in which the loading platform I00 is received (see also Fig. '7). The slide H2 is thus guided on the loading platform I00 for reciprocatory movement in the direction of the arrow I20 in Fig. 3.

The handle halves h to be operated on in the apparatus are, in the present instance, embossed blanks of precious or non-precious sheet metal (Figs. 3 and 8 to 10) which are successively placed into the described loading position with their edges e resting on the top face I02 of the loading platform I00. In order to facilitate the operators task of placing successive handle halves of varying length into the correct loading position on the platform I80, the slide H2 has adjustably secured thereto, as at I22, a bar I24 (Fig. 3) which is provided with a laterally projecting finger I26 that cooperates with a lateral lug I28 on the slide H2 in defining a longitudinal space on the platform I00 in which to place successive handle halves h. The slide I I2 is reciprocated in a manner described hereinafter.

The feeding device I06 comprises a channelshaped feed member I30 (Figs. 8 to 10) having a top wall I32, opposite side walls I34 and an end wall I36. The feed member I30 is mounted in depending fashion on an arm I38 by means of bolts I40 which extend through spacers I42 between the member I32 and the arm I38 and receive nuts I44 that are tightened against a flat surface I46 on the arm I38 (Figs. 3 and 9). There is also provided a pressure plate I50, having spaced studs I52 (Fig. 8) that extend through hollow bosses I54, respectively, on the feed member I30 and receive wing nuts I56 therebeyond. Surrounding each stud I52, and interposed between the pressure plate I50 and the bottom wall I60 of the respective boss I54 on the feed member I30, is a compression spring I62. The arm I38, which carries the feed member I30, is swingable about, and also movable in the direction of, an axis :r-a: (Figs. 2 and 3) in a manner to be described presently The arm I38 is suitably carried at I66 on the head I68 of a rod I10 (Fig. 6) which is provided with spaced collars I12 that are slidable on the inner, machined wall I14 of a cylindrical post I16, suitably mounted at I18 on a base plate I 80 which is, in turn, mounted on a bracket I 82 as by screws I84, for instance. Thus, the arm I38 is swingable about the described axis rx which is coextensive with that of the rod I10. The arm I38 is swung in opposite directions by means of a crank disk I88 on the driven, low-speed shaft I90 of any suitable reduction gearing I92 (Figs. 1, 2 and 4) which, like the bracket I82, is mounted on a table I94 that is, in turn, mounted on any suitable framework I96 on the base 22 of the apparatus. The crank disk I88 is provided with an eccentric pin I98 which is connected through a link 200 with a block 202, slidable in a horizontal guideway 204 in the bracket I82 (Figs. 1, 5 and 6). The block 202 is provided with a vertical groove 206 into which projects an anti-friction roller 208 on one end of a rocker 2 I 0 which is firmly mounted with its other end on the rod I10 (Fig. 5). Thus, the arm I36 is oscillated once on each revolution of the crank disk I88, as will be readily understood. The high-speed shaft 2 I4 of the reduction gearing I92 carries a pulley 2I6 which is drivingly connected with another pulley 2 I8 underneath the bed plate 28 by means of a belt 220. The pulley 2I3 is carried by one end of a shaft 222, the other end of which carries another pulley 224 (Fig. 4) that is drivingly connected by a belt 226 with another pulley 228 on the shaft of the motor 92. The shaft 222 is journalled in a bearing bracket 2I9 (Fig. 2) which is adjustably mounted at 22I on the frame extension 96 to permit the take-up of slack in the belt 220.

The arm I38 is, as previously mentioned, also movable in the direction of the axis :r-r. To this end, the rod I10 rests against one end 232 of a lever 234 (Figs. 5 and 6) which is pivotally mounted at 236 in a bracket 238 on the table I94 (Figs. 1 and 4). The other end 240 of the lever 234 preferably carriese an anti-friction roller 242 which cooperates with a cam disk 244 on the lowspeed shaft I90 of the reduction gearing I92. The above-described driving connection between the rocker 2E0 and the block 202 (Figs. 5 and 6) does not interfere with the referred movement of the arm I38 in the direction of the axis x-a:, since the anti-friction roller 208 remains within the confines of the groove 206 throughout the range of such movement of the arm I38.

Suitably carried at the free end of the arm I38 is a roller 250 (Figs. 1 to 3) which, in the lower position of the feed member I30 (Fig. 9), rides on a rail 252 which is arcuate about the swing axis :1:a: of the arm I38. The rail 252 is suitably carried by a bracket 254 which is clamped or otherwise secured to the table 16 as at 256 (Figs. 2 and 3). The rail 252 and the bracket 254 are recessed at 258 to clear the abrasive belt 68 (Figs. 1 and 4).

The feeding device I04 is reciprocated on the loading platform I00 by spaced arms 260 (Figs. 2, 3 and 4), which are connected by links 262, respectively, with the adjacent gibs H6 on the slide I I2. The rms 260 are mounted on a shaft 264 which is journalled in suitable bearing brackets 266 on an additional side rail 268 of the upright frame 26 (Figs. 1, 2 and 4). One end of the shaft 264 carries an arm 210 which is connected by a link 212 with another crank disk 214 on the low-speed shaft I 90 of the reduction gearing I92. Thus, the slide II2 of the transfer device I84 is reciprocated once during each revolution of the crank disk 214.

Following is a description of a single cycle of operation of the instant apparatus. Assuming that the motor 92 is running and that the transfer device I04 and feeding device I06 assume the momentary positions shown in Fig. 3, the operator will then place a handle half It into the loading position on the transfer platform I08, while the arm I38 will, by its own gravity and that of the rod I10, and under the control of the cam disk 244, be permitted to descend to its lower position (Fig. 9) in which the feed member I 30 is in operative relation with a handle half h" previously advanced to the "transfer position (Fig. 10) by the device I04. It will be noted 5 t me his .0. hat he s de wel 3.4,. of he feed member It". wi on de cent. o the latter nt its ower pos on be. i close pr x mity to. the tran ferr d and e ha f s tha he l tte on he followin o tward swi o t e rm. as e. mm d ate y mo ed cross he abrasive. el .8. and the pla e 15- Als e. ressu e p ate 1 will, on he d cribed... descent. o he feed member 13% to. ts lower no itiqnl en a the. ransf rr d handle al i and xer a pre su the eon s. ev denc d by th i ht rise of the. Wins n '56 above he respective boss s 15.4. on the ed membe s. .Eis- 9 The pres ure star d b h P ate h h ndl l al d ir ns t v r o he abra i e. b 63 plate lilfi, not only insures uniform e t e edge? f he hand e ha f: h he. a ra face he. e t 515 but el e determ n amount of abrasion, as well as the roiighness, of said edge e; Preferahy,the/springs mfoftne pressure plate S58 are'fsocalibfatedfas' to exert on the handle half 7;" ap' essu e 'whi'cl'i'is just sufficient to assure levelling; and' only slight r'o'iighening, of'the edges thereof. Immediately afterthe'feed member ltll'descends into feeding. relation with the transferred handle half h"; the'arm I35 and feed'member l tflare, by'the' action of the crank disk I88, swung outwardly,

moving thereby the handle half h. across thebelt 68 with its edge e in forced contact with the abrasive face Iii of the latter. On leaving the abrasive belt 68, the handle half h is movedover the plate 38, which is provided with a multiplicity of perforations I'l-I through which may escape into any suitable container therebeneath abraded matter, as Well as abrasive matter, which is brushed by the handle half h" onto the plate I98; The outward swing of the arm I38 is such as to move the feed member I3fiwell beyond the plate H28 in order to permit the handle half h" to gravitate into nother receptacle (not shown),

in which the abraded handle halves maybe col-' lected.

thereby the previously placed handle half h-from loading position to transfer positionfor its subsequentpick-upby thefeedzmember liill, Im-

mediately .on the described: transfers of the handle half. h, the transferdevice m4. is-retracted into the position shown inEig. 3 to enabletheoperatorto place another handle. half it into. the. loading position on the. platform. I00. for. its.

subsequent, transfer by the. device IM'into operative relation with the feed member I39; On .ar-v rival of the arm I38 and feed member ltllpin their t rmo p i n. hey a e aised nto he position shown in Fig. 10 by the action of; the cam disk 2%. Thereupon, and substantially at the time of the described retraction of the, transfer e ice 9 e a 38; a i eed m ber will, by the action of-the-cranl; disk I88,- be swung.

inwardly into the position shown in Fig.3, ready for descent into operative relation with handle,

half last transferred, This concludes; a single operating cycle of the apparatus.

The above-described operating cycleof the, apparatus is, of course, repeated over and over as long as the motor 92 is running. Thus, the in- 'stant apparatus is automatic-in its. operation to the extent where .an operator. ne ed merely place a handle half into the. referred'loading.

si e n. he P t orm n v ry] time n and ement hai h f ab e t sa d an fer a n raca transfer device I [it reaches its retracted position. While, in the, preceding description reference was made to the halves of knife handles as bee ing abraded in the instant apparatus, it. is. to be; understood that other articles may be abraded in the. instant apparatus with equal advantage.

'WhiIe I have shown and described the -pre..- ferred embodiment of my invention, it. will be, understood that various changes may be made in the, present. invention. Without departing from the underlying idea or principles of the invention, within the. scope of the appended claims,

Havin thus described our invention, what We claim .and desire to secure by Letters Patent, is:

1. Apparatus for abrading articles, c.on' pri's..-.v ing .a substantially horizontal abrasive surface.- means, for imparting continuous motio to said; surface in its own plane, a platform at, oneside of, and level: and continuous. h, said surf ce, a. deviceslidably reciprocable on said. platform and operative on each W rk troke hereof o; advance an article on said platform from a deposit station. to. a transfer station thereon, and mechanism operated in. timedgrelation with said device for feeding each advanced article from. said transfer station acrosssaid abrasive surface. transversely of the path, of motion, thereof forced engagement with the latter to a discharge. station at the opposite side of said surface, said mechanism including a memberin whichythe article is. releasably positioned during the ad: vance of said article from said tnansfer station; tosaid discharge station andwhich has an open, bottom so that thegarticleis dischargedrby gravity.

when, clear of saidslmface ats aid discharge sta-.

tion.

2. Apparatus for abrad ing articles, comprising. two=spacedrotary drums, an endless abrasive belt passed over said drums with its top run extend: ing in a substantially. horizontal plane and its abrasive face turned outwardly, means foridriving one of said drums, a platform at one side of,-andlevel and continuous with, said top run, a table underneath said. top run on which the l atter lies and travels, a deviceslida-bly recipro-- transfer station thereon, and mechanism operated' in timed relation with said device forf'eeding 'each advanced article from said transfer station in an arcuate path across said top run transversely of'the path of motion thereof in forced engagement with-theabrasive face thereof to a discharge station-at-the other side of "said belt, said mechanism including a member in which the article is releasably positioned during the advance of. aid article from, said transfer station to saiddischarge station and which has qp nbet om o hatt e r is i har d: by gravity when clear of said surface at said; discharge station.

3, Apparatus for abrading. articles, comprising an endless abrasive belt having a. substantially horizontal top .run andhaving itsabrasive face u ned o twardly, means. fordriv said elt;

a flat support underneath saidtoprun on which; the latter lies and travels, .a, platform .at-one, side. of, andlevcl andcontinuous v,with, said ,top run,

a feed, member. movable abOYe; and transversely of said ton run between a transfer station n on said platform ,and-an/eiecting station beyond the, othenside of saidtop run said member bei tracted position into an operative position in which it is in feeding relation with an article at said transfer station, operating means for moving said member between said stations and shifting it so as to feed an article from said transfer station across and in engagement with said top run to said ejecting station, on each movement of said member away from said transfer station, and a device operated in timed relation with said member for advancing an article on said platform from a deposit station thereon to said transfer station on each movement of said member away from said transfer station.

4. Apparatus as set forth in claim 3, in which said member is of inverted dish-shape and is shiftable between raised and lowered positions in which it clears an article, and partially covers the same, respectively, and said member clears said top run when in its lowered position.

5. Apparatus as set forth in claim 3, in which said member is of inverted dish-shape and shiftable between raised and lowered positions in which it clears an article, and partially covers the same, respectively, and said member clears said top run when in its lowered position and yieldingly carries an internal pressure plate pressing each article being fed against the abrasive face of said top run.

6. Apparatus as set forth in claim 3, further comprising an arm mounted at one end for swinging movement about a substantially vertical axis and also for movement in the direction of said axis, and carrying said feed member at its other end in depending fashion, and said operating means swing said arm back and forth between said stations and also axially move the same to shift said member.

'7. Apparatus as set forth in claim 3, in which said device is a slide reciprooable on top of said platform and pushing an article from said deposit station to said transfer station on each Work stroke thereof.

8. Apparatus for abrading plane surfaces of elongated articles, comprising an endless abrasive belt having a substantially horizontal top run and having its abrasive face turned outwardly, means for driving said belt, a platform at one side of, and level and continuous with, said top run, an inverted elongated channel member laterally movable above and across said top run between a transfer station on said platform and an ejecting station beyond the other side of said top run, said channel member being also shiftable at said transfer station from a raised position into a lowered position in which it straddles an article with its plane surface resting on said platform at said transfer station, said channel member clearing said top run when in its lowered position, operating means for moving said channel member between said stations and shifting it so as to feed an article from said transfer station across said top run to said ejecting station on each movement of said channel member away from said transfer station, said channel member having an end wall preventing an article therein from being carried away by the moving belt, and a device operated in timed relation with said channel member for advancing an article on said platform from a deposit station thereon to said transfer station on each movement of said channel member away from said transfer station.

9. Apparatus as set forth in claim 8, further comprising an arm mounted at one end for swinging movement about an axis at right angles to the'plane of said top run, and also for movement in the direction of said axis, and carrying said channel member at its other end in depending fashion, a. rail above said top run extending in an are about said axis as a center, a, roller on said other arm end riding on said rail in the lowered position of said arm, and said operating means swinging said arm back and forth between said stations and also axially moving the same to shift said channel member.

10. Apparatus as set forth in claim 8, in which said device is a U-shaped slide reciprocable on top of said platform, said slide having a yoke and spaced legs of which one leg is adjustable on said yoke to define a variable longitudinal space within which to place an article lengthwise on said platform, and said slide pushing a placed article from said deposit station to said transfer station on each work stroke thereof.

11. Apparatus for abrading articles, comprising an endless abrasive belt having a substantially horizontal top run and having its abrasive face turned outwardly, means for driving said belt, a flat support underneath said top run on which the latter lie and travels, a platform at one side of, and level and continuous with, said top run, a post having an internal cylindrical surface with its axis extending at right angles to said flat support, a shaft turnable and axially slidable in said post, an arm laterally rojecting from said shaft above said top run and movable with said shaft, a feed member carried by the free end of said arm in depending fashion and swingable about said axis across said top run between a certain station on said platform and an ejecting station beyond the other side of said top run, said member being also shiftable at said certain station in the direction of said axis from a raised position into a lowered position in which it is in feeding relation with an article at said certain station, and operating means for oscillating said shaft to swing said member between said stations, and also axially moving said shaft to shift said member so as to feed an article from said certain station across and in engagement with said top run to said ejecting station on each swing of said member away from said certain station.

12. Apparatus as set forth in claim 11, in which said operating means comprise a rocker on said shaft having a follower at its free end, a slide guided for movement at right angles to said shaft and having a groove extending parallel to said shaft and receiving said follower, power means for reciprocating said slide, and means operated in timed relation with the slide reciprocation for moving said shaft axially, the axial movement of said shaft being shorter than the length of said groove so that said follower remains in the latter in any axial position of said shaft.

13. Apparatus as set forth in claim 11, further comprising a device operated in timed relation with said operating means for advancing an article on said platform from a deposit station to said certain station thereon on each swing of said member away from said certain station.

14. Apparatus for abrading articles, comprising a substantially horizontal abrading surface having opposite side edges, means for imparting continuous motion to said surface in its own plane, mechanism including a member operative in continuous cycles for feeding, in each cycle, an article from a certain station at one of said edges of said surface transversely of the path of motion of said abrasive surface in forced engagement with the latter and to a discharge position clear of the opposite edge of said surface, Where the article isejected from said member, and means for operatingsaid mechanism to move said member in continuous cycles to and from said station and to and from said discharge position.

15. Apparatus for abrading articles, comprising an endless abrasive belt having a substantially horizontal top run and having its abrasive face turned outwardly, means for driving said belt, a platform at one side of said top run, a feed member movable above and transversely of'the path of motion of said top run between a certain station on said platform and an ejecting station beyond the other side of said top run, said member being also shiftable at said certain station from a retracted position into an operative position in which it is in feeding relation with an 20 article at said certain station, and means for REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 282,293 Fenn July 31, 1883 763,743 Ensign June 28,1904

2,057,290 Bradbury Oct. 13, 1936 2,288,944 Fuller July '7, 1942 2,359,488 Ponder Oct. 3, 1944 

